Nonset automatic electrical stop for phonographs and other like instruments



July 8 1924.

. B.REEVE NONSET AUTOMATIC ELECTRICAL STOP FOR PHONOGRAPHS AND OTHER LIKE INSTRUMENTS Filed June 6, 1923 Patented July 8, 1924.

UNITED STATES BERTRAM REEVE, 0F CHATHAM, ONTARIO. CANADA.

nonsn'r AUTOMATIC ELECTRICAL s'ror roe rnonoeaarns nn OTHER. LIKE INSTRUMENTS. V

Application .filed June s, 1923. Serial No. 5433195.

To all whom it may concern- .1

Be it known that I, BER'rRAM Rnnvn, a citizen of Canada, residing at Chatham, in the county of Kent and Province of Ontario, Canada, have invented certain new and useful Improvements in Nonset Automatic Electrical Stops for Phonographs and Other Like Instruments, of which the .following is a specification.

My invention relates to a stop for phonographs and other like instruments, in which the mechanism thereof is run from the .motor of the phonograph and is electrically controlled, ancl the object of my improvements is to automatically shut off the machine when through playing without setting the stop.

I attain this object by the mechanism illustrated in the accompanying drawing, in which i Fig. 1 is a top view showing the various parts of the control. .7

Fig. 2 is an end view showing drive gear and supporting frame.

Fig. 3 is a side view.

Figs. 4 and 5 are front and top views of the carriage.

Fig. 6 is a view of the circuit breaker.

Similar letters refer tosimilar parts in the several views. My invention applies to phonographs and other like instruments having a motor driven vertical shaft D. Figs. 1 and 3, the upper end thereof carrying a turntable A. on a base B. to the upper end of the vertical shaft D. under the base B. I attach a gear wheel C. of proper size which meshes into a gear wheel J. placed at right angles to the former and mounted on the inner end of a threaded spindle I. lying in a horizontal position and supported by head pieces E. E. which also support two guides H. H. on which travels the carriage G. as shown in Figs. 1, 3, 4 and 5.- At d. there is hinged to the under side of the carriage G. a bar a. which is shaped and threaded to fit the spindle I. and has a lift spring K. which keeps the bar a. in close contact with the spindle I. when the machine is in motion and also is a means of release when the carriage G. is drawn backward. Fastened to the carriage G. is an insulated block L. and a stem 0. also insulated, on top of said block L. At N. there is hinged a contact bar M. to the outer end of which is attached at right angles a bar I). projecting forward and outward and terminating in a tip projecting downward between :control lever B. and releasing lever :TS. and covered by fibre or other insulation a as shown in Figs. 1,8, .4, and 5. The spring o'f-the con-tact 'bar M. is regulated by a pin and set screw 'O.shown in Figs. 1, 3, and .5. In Fig. 1. Q. is the tone arm of the machine that carries the needle and is shown on the resting block P. when not innse. To this arm I attach a control lever B. by means of a screw Z and extend said leve r forward over the guides H. H. asshown in Figs. 1, 3 and 5. "I also make a projectionupward at f. to form a fulcrum to move the control lever'R. backward when the tone arm Q is moved back on the bloc'k to change records. At a certain point on the lever R. I attach a releasing fbar S. by means of a pivot and connect the outer end of said bar to the control lever bya spring T. shown in Fig. 1-. The object of the relieving bar S. is to hold the contact bar M. steady when the tone arm Qh gets to the end of 'therecord until the carriage G. catches up to thebar M. to make contact with the point O. When the control lever R. is drawn back, the spring T. allows the lever S. to open so that'the control lever B. can. come under the spring K. and raise the clutch a. from the threads of the drive shaft 1. in order to draw the carriage back to a starting position. My device is so constructed that the tone arm Q,. moves forward faster than the carriage G. causing a ten sion on the control lever B. and becauseof leasing the brake W. to stop the machine.

In conjunction with the mechanical parts above described my device includes elec trical parts consisting of a dry cell 90. a mag-' net U. a stop trip lever V. a brake IV. and a circuit breaker F. all of which are-placed in any desired position and connected together by insulated wires Y. starting from a point in the dry cell 90. to the stop trip V., from the circuit breaker F. to the magnet U. and from the magnet U. to a ground on E. of the carriage support, also from the contact bar M. to a point on the dry cell :0. All of which is shown in Fig. 1. In Fig. 6. is shown the circuit breaker F. which while the machine is playing the lever V. is to the right resting on the breaker F. making a circuit through the positive wire while it is broken on the negative wire at M. and O. and when the bar M. comes in cont-act with the point 0. the magnets act as formerly described and force the lever V. to the left ofi thebreaker F. breaking the circuit during ,the time the machine is not in use.

To operate my device a record is placed on the turntable A. and the machine started in motion the gear wheel C. on the drive shaft D. operating on the gear wheel J. on the threaded spindle I. causes the carriage G. to move forward at a calculated speed, at the same time the control lever B. attached to the tone arm Q. travels at a speed sufficiently fast to hold themetal bar M. by means of the bar 6. between the levers R. and S. against the stem insulated 0. until the tone arm Q. comes to the end of the record and the lever B. being attached thereto automatically stops and the carriage G. is drawn forward until the metal bar M. touches the screw 0. and breaks the circuit at F. causing the lever V. to trip the stop W. and stop the machine, as previously de scribed. It is to be noted that no matter on what part of a record the machine is started it will automatically stop when through playing the said record. My nonsetting device can be used in conjunction with stops of any make of machine.

What I claim as my invention and wish to secure by Letters Patent in a nonsetting stop is The combination of gear wheel mounted on the shaft of the machine, a larger gear wheel lying at right angles to the former, a horizontal threaded shaft, with means to at tach said larger gear wheel to the inner end of said shaft, track guides, shafts and guide supports, means to allow said shaft to revolve on said supports, means to attach said guides to said supports and means to fasten said supports to the top of motor block, a clutch made toconform with and threaded to fit on above mentioned shaft, a carriage that moves back and forth on said guides carrying, an insulated block and stem, a contact bar, an adjustment screw and means to attach said insulated block, stem, contact bar and adjustment screw to said carriage, means to hinge above mentioned clutch to the under side of said carriage, a spring with means to fasten said spring to and hold said clutch in position on the above mentioned shaft when carriage is travelling for- Ward and also to allow said clutch to be released whencarriage is to be moved backward, a control lever projecting outward from the tone arm, of the machine and means to attach said lever to said tone arm, a projection upward on said tone arm to act as a fulcrumagainst the above mentioned control lever, when said lever is drawn backward, a releasing bar lying parallel with said control bar, the upper end of saidreleasing bar being curved and crossing over said control bar at a certain point, means to fasten said releasing bar to said control lever, a tension spring connecting the outer end of said releasing bar with a point on the said control bar, a right angled bar attached to and projecting forward at right angles from the contact bar previously mentioned, the outer arm of said bar lying parallel with the above mentioned control bar with its outer end turned downward, a stop .t-rip lever and brake constituting the unechanical parts with electrical parts consisting of a dry cell, a magnet, and insulated wires as means to connect the said dry cell to the aforesaid contact bar, the dry cell to the stop trip lever, the circuit breaker to the.

magnet and the magnet to a ground.

Chatham, Ont, Apr. 10th,.1923.

BERT. REEVE. Signed in the presence of lVLXRY \VARDELL, ELIZABETH GAsToN. 

